HHS is the principal agency for protecting the health of all Americans and providing essential human services, especially for those who are least able to help themselves.

Substance Abuse and Mental Health Services Administration

SAMHSA's mision is to assure that quality substance abuse and mental health services are available to the people who need them, and to ensure that prevention and treatment knowledge is used more effectively in the general health care system.  SAMSA also provides access to webpages for the Center for Substance Abuse Prevention and Center for Substance Abuse reatment.

National Institutes of Health

NIH is one of the world's foremost biomedical research centers, and the Federal focal point for biomedical research in the U.S.

National Institute on Alcohol Abuse and Alcoholism

NIAAA supports and conducts biomedical and behavioral research on the causes, consequences, treatment, and prevention of alcoholism and alcohol-related problems.

National Institute on Drug Abuse

The mission of NIDA is to lead the Nation in bringing the power of science to bear on drug abuse and addiction.

NCHS -- National Center for Health Statistics

United States Dept. of Justice

As the largest law firm in the Nation, DOJ serves as counsel for its citizens, representing them in enforcing the law in the public interest.

The Office of National Drug Control Policy

ONDCP is authorized to develop and coordinate the policies, goals, and objectives of the Nation's drug control program for reducing the use of illicit drugs.

National Library of Medicine

NLM is the world's largest library dealing with a single scientific/professional topic, carrying over 4.5 million holdings.

The Centers for Disease Control and Prevention

CDC's mission is to promote health and quality of life by preventing and controlling disease, injury, and disability.

U.S. Department of Education

A wealth of information for teachers, administrators, policymakers, researchers, parents, students, and others with a stake in education.

Drug Enforcement Administration

The DEA enforces the controlled substances laws and regulations of the U.S.

Indian Health Service

The IHS is an agency of the Public Health Service providing health care to American Indians and Alaska Natives.

Bureau of Alcohol, Tobacco, and Firearms

Among other things, the Bureau of Alcohol, Tobacco and Firearms (ATF) enforces and administrers the Federal Alcohol Administration Act and eliminates trafficking of contraband cigarettes.

National Institute of Mental Health

This Federal agency conducts and supports research nationwide on mental illness and mental health, including studies of the brain, behavior, and mental health services.

Food and Drug Administration